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'A. W. SCHANK. GREASE lNlECTOR FOR FILLING DIF FE'RENTIAL GEAR CASINGS.

APfLlCATlON FILED JAN-21,1919.

Patented Oct. 14, 1919.

mean err-11s PATENT FF1E.

ARTHUR W. SCHANK, O Ili CAMDEN, NEW JERSEY.

GREASEIN'J'ECTOR FOR FILLING DIFFERENTIAL-GEAR. CAfSING S.

To all whom it may concern:

Be it known that I ARTHUR W. ScHliNK,

simple and effective device of this descr1p tion adapted to be operated by compressed air provided with convenient mechanism for turning on and shutting oil" the compressed air so as to start and stop the ejection of grease. v

A still further object of my invention is -to provide a simple-and effective means of filling the container with grease.

With these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims. Y

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, I will describe its construction in detail referring by numerals to the accompanying drawing forming a part of this application inwhich Figure 1, is a broken away section of an injector made in accordance with my improvement; and

Fig. 2, is a plan view thereof.

In carrying out my invention as here embodied 1 represents the ease container having a head 2 securelyfldsing thereto or formed therewith and this head in turn has secured thereto a barrel 3, the outer end of which is threaded to receive the nipple 4.

5 represents the ejector piston which is fitted to slide within the container and has secured thereto the rod 6 which projects rearward into the barrel 3 and has secured upon this inner end the air piston 7, the latter being fitted to slide within said barrel.

A plug valve 8 is fitted within the nipple having the passageway therethrough in alinement wit the passageway 10 through v with Specification of Letters Patent. Patented (Pct. 14L, 11919. Application filed January e1, 1919. semi No. 272,222.

the nipple and the outer end of said nipple v is provided with screw-threads 11 for the to the arm 16.

The arm 19 is carried upon the lower end of the short spindle 17 which latter is jourthe upper end of-the short spindle 17 pro-' jecting to one side of the handle 19 having a spring 21 interposed between it and said handle so as to normally hold said lever away from the handle as shown in Fig. 2.

This arrangement enables the user of the injector to open and close the plug valve 2 by pressing against the hand lever 20 thus admittin compressed air to the barrel or cutting t e same ofi' therefrom for the pose hereinafter set forth.

To the front end of the container l'is secured the head or closure 22 by means of the hinge 23' so that this head may be swung open for filling the containerwith grease. In order that the head 22 may be firmly 'naled in the lug 18 projecting from the locked when closed I pivot a latch 2/1 at 25 rubber, leather, cork and the like.

To facilitate the filling of gear casings andother grease receptacles .I provide a nozzle 28 which is secured to or formed with the head 22' having a passageway leading from the interior of the container.

From the foregoing description the opera tion of my improved injector will be obvious as follows:

The piston 5- being moved to the rear end of the container, the container being filled with grease, and the head 22 closed and locked, a air source 1s then attached to the threads 11 of the nipple when the device is ready for use. Now by grasping the handle 19, inserting the nozzle in the grease receptacle to be ipe leading from a compressed filled andpressing upon the hand lever the piston 5 outward and in so doing eject grease from the nozzle into the desired receptacle. When the proper amount of grease has been delivered to the desired receptacle the lever 20 is released, .the spring 21 forcing it sidewise from the handle and thereby closing the valve through the mechanism before described, thus stopping-the further delivery of grease.

Qf course, I- do not wish to be limited to the exact. details of construction as herein shown as these may be varied with the limits of the appended claims without departing from the spirit of my invention.

Having thus fully described my invention what I claim as new and useful is 2-- 1. In a device of the character described, a container for holding a lubricant, a nozzle for delivering the lubricant from the container, a barrel projecting from the rear end of the container, a plunger fitted to slide in the container, a secondary plunger fitted to slide within the barrel, a rod connecting the two plungers, a nipple carried by the outer end of the barrel and a valve located in said nipple, a handle carried'by the container, a

mechanism leading from the handle to the valve for operating the latter to admitcompressed air to the barrel back of the second plunger.

2. In a device of the character described a I container, a closure hinged thereto, means for locking said closure in its closed pos1- tion, a nozzle projecting outward from the attachment of an air pipe, a valve fitted in the nipple and adapted to open and close the passage way therethrough, an arm carried by the upper end of the valve, a spindle carried by the container, an armcarried by the lower end of the spindle, means for connecting said arms together, a hand lever carried by the upper end of the spindle, means for forcing the hand lever in one direction, and a handle for manipulating the device.

In testimony whereof I have hereunto afiixed my signature.

ARTHUR W. SOHANK. 

